According to the American Heart Association, which provides courses and certification in basic life support, BLS certification teaches you to be able to recognize emergency situations as they arise, such as choking, cardiac arrest or any trauma that could lead to life threatening conditions.
Of the eight people, only Otto Frank survived the war. Anne died when she was 15 years old in Bergen-Belsen, from typhus. The exact date of her death is unknown and has long been believed to be in early March, a few weeks before the prisoners were liberated by British troops in April 1945.
Anne and Margot weren't the only hiders to die. the van Pels, Pfeffer, and Edith died too. The last one was Otto Frank. When he returned, he thought he could have a family reunion with his family...until he learned that they died. Otto was devestated. But then, Miep, a helper, gave Otto Anne's diary.